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1.发明授权公开(公告)号：US10350538B2
公开(公告)日：2019-07-16
申请号：US15653833
申请日：2017-07-19
IPC分类号： B01D53/047 , B01D53/053 , C01B3/56 , C01B32/50
摘要： In various aspects, methods are provided for hydrogen production while reducing and/or mitigating emissions during various refinery processes that produce syngas, such as power generation. Syngas can be effectively separated to generate high purity carbon dioxide and hydrogen streams, while reducing and/or minimizing the energy required for the separation, and without needing to reduce the temperature of the flue gas. In various aspects, the operating conditions, such as high temperature, mixed metal oxide adsorbents, and cycle variations, for a pressure swing adsorption reactor can be selected to minimize energy penalties while still effectively capturing the CO2 present in syngas.
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公开(公告)号：US10029205B2
公开(公告)日：2018-07-24
申请号：US15258076
申请日：2016-09-07
发明人： Narasimhan Sundaram , Hans Thomann
摘要： In various aspects, apparatuses, systems, and methods are provided for performing two stage separation of CO2 from a gaseous stream. The first stage adsorbent can be comprised of a plurality of cylindrical or substantially cylindrical rings. The first stage adsorbent can be comprised of a metal organic framework. The second stage adsorbent can be subject to a displacement desorption process. The second stage adsorbent can be comprised of a support and a metal compound selected from the group consisting of alkali or alkaline earth. The first and second stage adsorbent can be arranged concentrically for space and efficiency considerations.
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公开(公告)号：US10016716B2
公开(公告)日：2018-07-10
申请号：US15258097
申请日：2016-09-07
发明人： Narasimhan Sundaram , Hans Thomann
IPC分类号： B01D53/047 , B01D53/04 , B01J20/34
CPC分类号： B01D53/0462 , B01D53/0407 , B01D53/047 , B01D2259/40011 , B01D2259/40083 , B01J20/34 , B01J20/3441
摘要： Systems and methods are provided for performing a swing adsorption process, such as a temperature swing adsorption process. During portions of a swing cycle where one or more components are being desorbed, a vibration or other perturbation can be induced in the adsorbent and/or in the adsorbent structure to assist with desorption. Inducing a vibration or other perturbation in the adsorbent structure can provide a way to introduce additional energy into the adsorbent system without having to increase the temperature of the adsorbent structure.
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公开(公告)号：US20210017480A1
公开(公告)日：2021-01-21
申请号：US16891141
申请日：2020-06-03
发明人： Narasimhan Sundaram
摘要： A photobioreactor includes one or more annular chambers concentrically positioned about a central axis, and an algae slurry contained within the one or more annular chambers.
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公开(公告)号：US10814288B2
公开(公告)日：2020-10-27
申请号：US15653853
申请日：2017-07-19
摘要： Gas separation modules and methods for use including an integrated adsorbent and membrane. In certain refining applications, it is paramount to obtain high purity product gases. Adsorbent beds are effective at removing certain contaminants, such as CO2, from gas streams containing product and contaminant constituents to form a product-rich stream. The integrated membrane permits a further separation of products from any unadsorbed contaminant to produce a high purity product, such as hydrogen, stream. The gas separation modules described herein include stacked, radial, and spiral arrangements. Each modules includes a configuration of feed and cross-flow channels for the collection of contaminant gases and/or high purity product gases.
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公开(公告)号：US10677160B2
公开(公告)日：2020-06-09
申请号：US15273800
申请日：2016-09-23
发明人： Narasimhan Sundaram , Ramesh Gupta , Hans Thomann , Hugo S. Caram , Loren K. Starcher , Franklin F. Mittricker , Simon C. Weston , Scott J. Weigel
IPC分类号： F02C3/34 , F02C6/04 , B01D53/047 , F01K17/04 , F02C9/16
摘要： Systems and methods are provided for combined cycle power generation while reducing or mitigating emissions during power generation. Recycled exhaust gas from a power generation combustion reaction can be separated using a swing adsorption process so as to generate a high purity CO2 stream while reducing/minimizing the energy required for the separation and without having to reduce the temperature of the exhaust gas. This can allow for improved energy recovery while also generating high purity streams of carbon dioxide and nitrogen.
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公开(公告)号：US20190300801A1
公开(公告)日：2019-10-03
申请号：US16357670
申请日：2019-03-19
IPC分类号： C10G59/04 , B01D53/047 , C10G25/03 , C10G35/085 , B01J20/22 , B01J20/28
摘要： Systems and methods are provided for performing multistage naphtha reforming with intermediate separation of aromatics using a swing adsorption process. Use of a swing adsorption process can allow aromatics to be selectively removed from the intermediate reforming effluent while reducing or minimizing the energy costs for cooling and subsequent reheating of the intermediate reforming effluent. The resulting aromatics-rich stream generated from swing adsorption can have a substantially higher aromatics content than an aromatics-rich stream generated by conventional separation methods during multi-stage naphtha reforming. In some aspects, selective thermal purging (either hot or cold) can be used to further facilitate adsorption or desorption of components by the adsorbent in the swing adsorption vessel.
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公开(公告)号：US20210087513A1
公开(公告)日：2021-03-25
申请号：US16891211
申请日：2020-06-03
发明人： Narasimhan Sundaram
摘要： A system for growing algae includes a gas concentrator configured to receive a first gas containing CO2 at a first concentration and discharge a second gas containing CO2 at a second concentration higher than the first concentration, and a photobioreactor containing algae in an algae slurry and fluidically coupled to the gas concentrator to receive the second gas. A recycling line extends from a gas outlet on the photobioreactor to remove a third gas from the photobioreactor for future use in the photobioreactor.
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公开(公告)号：US10439242B2
公开(公告)日：2019-10-08
申请号：US15339983
申请日：2016-11-01
IPC分类号： H01M8/0662 , H01M8/04089 , H01M8/0612 , B01D53/047 , C01B3/34 , H01M8/0668 , H01M8/14 , B01D53/26
摘要： Systems and methods are provided for combined cycle power generation while reducing or mitigating emissions during power generation. Recycled exhaust gas from a molten carbonate fuel cell power generation reaction can be separated by using a swing adsorption process so as to generate a high purity CO2 stream while reducing or minimizing the energy required for the separation and without having to reduce the temperature of the exhaust gas. A high temperature adsorption reactor adsorbs the CO2 and recovers H2 from an exhaust gas of a first molten carbonate fuel cell at a high temperature and at a low pressure. The reactor passes along the adsorbed CO2 to a cathode and the recovered H2 to an anode of a second molten carbonate fuel cell for further power generation. This can allow for improved energy recovery while also generating high purity streams of CO2 and H2.
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公开(公告)号：US10350537B2
公开(公告)日：2019-07-16
申请号：US15653806
申请日：2017-07-19
发明人： Narasimhan Sundaram , Hans Thomann
摘要： Methods are provided for the production of nitrogen, hydrogen, and carbon dioxide from an exhaust gas. Exhaust gas from combustion in a fuel rich (or reducing) atmosphere is primarily composed of CO2, CO, N2, H2O, and H2. CO may be converted to CO2 and H2 via the water gas shift reaction. Carbon dioxide may then be effectively separated from nitrogen and hydrogen to produce a carbon dioxide stream and a nitrogen/hydrogen stream. The nitrogen/hydrogen stream may then be effectively separated to produce a high purity nitrogen stream and a high purity hydrogen stream. The process may be done in any order, such as separating the nitrogen first or the carbon dioxide first.
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